Registering mechanism of gas-analysis apparatus



June 12, 1923.

O. RODHE REGISTERING MECHANISM OF GAS ANALYSIS APPARNI'US Filed 001;. 51 19?.8

Patented June 12, 1923.

, UNITED 'sr 01.01 Roman; oF'sTocKnoLM, SWEDEN, Assiernort T0 I Leases E's; i!" r REGISTERING MECHANISM OF GA S ANA I YSIS APE 'ARATUS.

Application filed October 31,1918.v Serial No. 260,548.'

To all whom it may concern.

Be it known thatI, OLOF, RonHE, chief engineer, subject of the King of Sweden, residing at 54 ()dengatan, Stockholm, Sweden, haveinvented certain new and useful Improvements in the Registering Mechanism of Gas-Analysis Apparatus, of which the following is a specification. 1 1 i In known gas analysis'apparatus the result, obtained in a second measuring-vessel, is generally registered by a: mechanism,

which indicates directly on a diagram or been constructed for a corresponding-result in 'such a way,that. an absorption in the absorbing vesselof 20% of the total gas volume' is. the most that: can be .indicated on the scale.

-This-results in a considerable-inconven ience, in that the gas analys s apparatus can not be used for determining the percentage of a constituent. of the ga's, when thelsai-d, percentage exceeds 20% If the percentage of said constituentis, for instance, 30%,,the mechanism will never be moved, as the ;.con dition of movement is, that atleast 80% :of the original gas volume shall remain after the absorption.

The object of this invention is to avoid said inconvenience, whichfiseattained thereby, that any of the devices of the mechanism, or their movements, such as the meas- 5 uring-bell, thediagram, the recording stylus or the transmission between the measuring belland the styl'us'is adjustable on a suitable scale in such a-way,*;thateven a quantity of gas largeluthan that one for which the apparatus is constructed, can :be, recorded. A q On the accompanying.- drawing, an:- embodiment of the presentinvention, arranged in connection with the mechanism :of a gas analysis apparatus ofv known construction,

is schematically shown in Fig. 1.

I I vENs'K'A' AK'rI'aBoLAGEr Mono, or'srocxnomu, swnnn n showsthe scale Z and. its partsfrom below. i

In this embodiment an adjustmentis effected of the position from which mixture begins to flowinto it, it being unthe,meas-. urmg-bell starts to r se whenthe gaseousderstood that whateverthe starting position of the measuring bell, its movement will, be

proportionalto the quantity of gaseous mixturewhich flows into it. VJ hen the gaseous mixture has passed through the first meas urin receptacle andthe usual absorption vesse, it flows to the second measuring receptacle A through the pipe 1).; Thisapparatu-s can be built according to the U. 'S. A. Patent No. 1,068,091. The measuring-bell is supported by the chain, 0, running over the wheel or pulley d and on its other end.

carrying a counterweight e which is v held down by the check-nutn, This nut 11 can be screwed up and down on thejscale Z, which is attached toasuitable fixed support (not shown). Said scale iscxternally threaded on its lower. .end Z weight 6. The

the projection 7, which, whenfthe -measu'r in'gbell rises on account of the introductionof the gaseous mixture therein, will meet andhas aslit 0 for the .1; pulley d is provided with 7 with theshoulder g on a larger pulley h,

which is movably arran edv on the same shaft as 'the'pulley d. a runs, a chain j, one end of which, is-fastened on the pulley, while the other. end carries ,ver the wheel 721..

the crayon ii, whichj'on the diagram .16 re.

cords thehmovemfent. ofthe measuringebell V A. The crayon 2' therefore put in. action, when the with the shoulder first then will be projection f meets g and ,catches the larger pulle nh-or in other words, the record disk 1 closes only the movement of the measuring bell at the end of. the filling, but this move-r geared in'such ment ofthe measuring-bell is a way,.that the crayonz' will hav'e a greater movement than the bell, in clearly indicate .therecording. ,This, apparatus is normally adjusted and they diagram is provides for recording be tween v zero and 20% .of volume. only; but I order to more by, means of the auxiliary contriva11ces,;..-:

which, comprise my invention and-which have been heretofore referred to,'tl1e.apparatus may be-adjuste'dto recordangabs'orbed percentage amountingto more than 20% of the total gas volume; By

screwing down the 1.

nut a the weight 6 will be lowered and the bell A, which is connected to the weight by chain 0, will be raised to a predetermined new level, thus bringing the projection f into the dotted position. The amount of elevation given to the bell A will be accurately indicated by the indicator m, secured to the chain c and moving over the scale Z.

Assuming for example that it is desired to ascertain the quantity of a constituent which amounts to between 20 and 30% of the total volume of the gaseous mixture.

Without adjustment the apparatus will not record more than 20% of an absorbed constituent because the projection 1, whose movement is proportional to the distance through which the unabsorbed gas will raise the bell A, will not reach and move the shoulder unless at least 80% of the total gas mixture enters the bell. But if the bell A is raised to a new starting level and the projection f is at the same time advanced to a position nearer the shoulder 9, it will require less than 80% of the total gas volume to cause the projection 7" to traverse the shorter distance to the shoulder g and thus more the indicator 5. It should be understood that from any starting position on? the bell A it will commence to rise as soon the gas begins to flow into it.

As previously stated the bell is raised and the projection is given its new starting position by screwing down the nut n on the threaded portion Z of the scale Z. The scale Zis graduated in terms of the added record able percentages of absorbed gas made possible by; raising the bell A. In other words in the example taken, the nut n will be screwed down carrying the weight 6 before it and thus pulling down the chain 0 until the indicator on reaches the line 10 on the scale. It will be apparent that any percent-age now indicated on the scale is must be corrected by adding't'he 10% indicated on the scale Z, the total percentage of ab sorbed gas being the sum of the percentages indicated on the two scales.

The movement oi the projection 7' exactly to the shoulder 1/ corresponds normally without ad-j ust'ment exactly with 80% remainder of theoriginal gas volume, which movement on the drawing is indicated with the curve a. If the movement is continued-at the same time that the larger pulley it becomes caught, there will be recorded on the diagram 70,the curve {5 corresponding to the remaining perentage beyond 80 of theoriginal gas volume. It the measuring-bell is elevated to correspond to the line 10, the projection is removed to the dotted position. If thereafter the gaseous mixture, remaining from the absorption is introduced into the measuring bell, the recording mechanism starting from 'theadjusted position will be put in action in a known way. On the diagram Ir -thereby the volume of the gaseous mixture, the indi-,

cator m will be returned to 09nd the analysis will take place in the manner already known.

It is obvious, that the same result can be obtained through reversing the diagram is, the projection f, the shoulder or the vessel, which surrounds the measuring-bell A or through changing the length of the chains 0 and j. I

The diagram may be replaced by a scale and th crayon i-by an indicator. I

In the appended claims, the expression registering device is .intendedto cover recording devices, as well as indicating devices, it being optional, so far as thepresent invention is concerned, whether or not a record of the :gas analysis is made.

Claims:

1. In a gas-analyzing system, the combination of a gas analyzer, comprising a 'bell gasometer for measuring residual gas after absorption of a given constituent, registering means associated with a chart arranged to normally register on said chart when a predetermined minimum volume of unabsorbedgas is leftafter absorption of the absorba ble portion of the gas mixture "being tested, a lost motion connection between the bell of saidgasomet-er and said registering means, with means for measurably diminishing by a predetermined amount the lostmotion or the said 10st anotion connection.

'2. In a gas-'analyzingisystem,'thecombination oi a gas analyzer including an element movable to different positions according to the volume of residual 1gas leit after absorption of a constituen't from a given initial volume of gas bein treated, a registering device associated with a chart adapted to non ma'lly register only when-a known minimum percentage of unabsorbable constituents are present in the gas being tested,'a lost motion connection between said element movable 'to different positions and said registering device, and means for providing a predetermined known shortening of the amount of lost "motion of said connection.

3. In a gas-analyzing system, the combination of a gas analyzer including an element movable to dififerent positions accordingto the volume of unabsorbed gas,a registering device comprising -a member movable with respect to an indicia-bearing gauge, a

' natlon of a gas analyzer including a bell gasometer for measuring residual gas after absorption of a given constituent, a transmltting member responsive to the movement of the bell of said gasometer, a second transmitting member actuated by the first transmitting member When the first transmitting member has moved a predetermined amount, a registering device including an indicator responsive to the second transmitting member and means for var in the startin osition of the first transmitting member.

5. In a gas analyzing system, the combination of a gas analyzer including a bell gasometer for measuring residual gas after absorption of a given constituent, a pulley, a

chain or the like running on said pulley, said chain'being secured at one end to the gas ometer bell and having a counterweight secured to its other end, an indicator carried" by said chain, a scale associated with saidindicator, means for varying the starting elevation of the counterweight, a transmit.

ting member actuated by the pulley when the pulley has rotated through a predetermined angle, and al registering device including an indicator responsive to said transmitting member. j

6. A device according to claim 5, in which thetransmitting member is a pulley mount ed on the same axis as the first mentioned pulley and having an. engaging element 10- catedin the path of a coacting engaging ele ment on said first mentioned pulley.

In testimony whereof I afiix my signature in presence of two witnesses.

OLOF RODHE. Witnesses:

JACOB BAGGE, CHARLES LAFELYL I 

